() Draw the project network. (i) Find the expected duration and variance for each activity. (ii) What is the expected project length and standard deviation? (iv) What is the probability that the project will be completed 3 weeks later than the expected time?
Q: A multinational business unit has an examination system for the batches of ventilator units bought…
A:
Q: In most cases a validation of the estimate is a sanity check' to ensure that the estimate is…
A:
Q: On a particular day a random sample of 12 tins of peas is taken from the output of a canning factory…
A:
Q: sample of 20 students yielded a mean of = 72 and a variance of s2 = 16 for scores on a college…
A:
Q: Installation of a certain hardware takes a random amount of time with a standard deviation of 5…
A:
Q: Many cardiac patients wear an implanted pace- maker to control their heartbeat. A plastic connector…
A:
Q: Bottles for room spray are supposed to weigh exactly 16 oz. Inspectors want to develop process…
A: The sample size is given as, The mean weights are given as, X-bar is calculated as, The control…
Q: The following data provide the time in months from hire to promotion to manager for a random sample…
A:
Q: standard deviation of the resulting linear
A: Given data, Linear dimesnions,S and T are, σs=7 μm σT=12 μmCalculate the standard deviation of the…
Q: The number of (large) inclusions in cast iron follows a Poisson distribution with a mean of 2.5 per…
A: Let X be the Poisson random variable with the parameter with the parameter k=2.5 inclusions per…
Q: 4. The number of flaws in bolts of cloth in textile manufacturing is assumed to be Poisson…
A: Please refer the next page for answer
Q: A work sampling method is used to determine the proportion of the time a worker is idle. The…
A: Data given- Confidence level = 95% Degree or precision = 0.03 Day No. Times clerk idle total…
Q: What general trend did you observe from set-ups 1 to 2? Support your answer by using the data…
A: From setup 1 to 3, we observe that the initial velocity of the Marble A was varied. Ignoring all the…
Q: Differentiate probability sampling from non-probability sampling.
A: 1) Probability sampling may be a examining method, in which the subjects of the populace get an…
Q: Quality Engineering question Pleas, explain briefly the necessity and benefit of collecting data…
A:
Q: For the Given values of 72.9, 75.6, 83.8, 84.2, 76.1,Calculate (1) Mean (1)Algebraic Sum of…
A: Mean also called as average is found by the ratio of sum of all observation to the total number of…
Q: Q- For a sample of washers produced by a machine is normally distributed with mean inside diameter…
A:
Q: The grouped data in Table below represent the number of children from birth through the end of the…
A:
Q: During the manufacture of hard disks, the height between the disk and the head, the headlift, must…
A: Sampling Distribution is the most important tool in the industry to control the Production process…
Q: Directions: Answer the given questions. ho1. What is the relationship between decision-making and…
A: Statistical judgments are made based on observations of a phenomena that is subject to…
Q: An electrical firm manufactures light bulbs that have a length of life that is approximately…
A:
Q: Mr Hafiz is required to create a survey on his subordinate opinion on cost and standard of living.…
A: Inferential Statistics (for instance, a diagram or chart) and inferential insights permits you to…
Q: Discuss how possible uncertainties of bottom-hole sampling for PVT analysis? Propose the quality…
A: Here we are discussing the possibilities of the uncertainties of bottom-hole sampling for PVT…
Q: distributed with a standard
A: Focus And SpreadWhile breaking down univariate information, proportions of the middle and spread are…
Q: a) The elongation of a steel bar under a particular load has been established to be normally…
A: (a) Given, Mean, μ=0.05 in Standard deviation, σ=0.01 in
Q: question is whether the two machines are equally consistent in the dispensing of the liquid. To…
A:
Q: C. A sample of ages and weights of five women members of an aerobics class showed their weights and…
A: “Since you have posted a question with multiple subparts, we will solve first three sub parts for…
Q: 2. An electrical firm manufactures light bulbs that have a lifetime that is approximately normally…
A: Given; n=36 X¯=1510α=0.05 a) Test statistic Z=X¯-μσ/n=1510-150036/36=10356=1.667
Q: Propose a methodology using data analysis techniques for the selection of a site for a new ski…
A: A sort of study performed in GIS to discover the optimal area or site for something is site…
Q: The elastic region of a materials stress strain graph is shown below. Determine the Modulus of…
A: The given stress-strain diagram can be redrawn as below,
Q: The network diagram for a project is shown in the accompanying figure, with three timeestimates for…
A: (a) Understand that in the question the optimistic time, most likely time and pessimistic time for…
Step by step
Solved in 2 steps with 2 images
- A chemical engineer desiring to study the evaporation rate of water from brine evaporation beds obtained data on the number of inches of evaporation in each of 55 July days spread over 4 years. The data are given in the following stem and leaf plot, which shows that the smallest data value was 0.02 inch, and the largest 0.56 inch. Stem Leaf 0.0 2, 6 0.1 1, 4 0.2 1, 1, 1, 3, 3, 4, 5, 5, 5, 6, 9 0.3 0, 0, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 8, 9 0.4 0, 1, 2, 2, 2, 3, 4, 4, 4, 5, 5, 5, 7, 8, 8, 8, 9, 9 0.5 2, 5, 6 Find the: a) sample mean; b) sample median; c) sample standard deviation of these data. d) Do the data appear to be approximately normal? e) What percentage of data values are within 1 standard deviation of the mean?A textbook publishing company has compiled data on total annual sales of its business texts for thepreceding nine years:Year 1 2 3 4 5 6 7 8 9Sales (000) 40.2 44.5 48.0 52.3 55.8 57.1 62.4 69.0 73.7a. Using an appropriate model, forecast textbook sales for each of the next five years.b. Prepare a control chart for the forecast errors using the original data. Use 2s limits.c. Suppose actual sales for the next five years turn out as follows:Year 10 11 12 13 14Sales (000) 77.2 82.1 87.8 90.6 98.9Is the forecast performing adequately? Explain.An electrical contractor’s records during the last five weeks indicate the number of job requests: Week 1 2 3 4 5 Jobs 20 22 18 21 22 Predict the number of requests for week 6 using each of this method:a. Naive
- The following data provide the time in months from hire to promotion to manager for a random sample of 25 software engineers from all software engineers employed by a large telecommunications firm. 5 7 229 453 12 14 18 14 14 483 22 21 25 23 24 34 37 34 49 64 47 67 69 192 125 Calculate the mean, variance, and standard deviation for this sample.Customers arrive at a bakery at an average rate of 18 per hour on weekday mornings. Thearrival distribution can be described by a Poisson distribution with a mean of 18. Each clerkcan serve a customer in an average of three minutes; this time can be described by an exponential distribution with a mean of 3.0 minutes.a. What are the arrival and service rates?b. Compute the average number of customers being served at any time.c. Suppose it has been determined that the average number of customers waiting in lineis 8.1. Compute the average number of customers in the system (i.e., waiting in lineor being served), the average time customers wait in line, and the average time in thesystem.d. Determine the system utilization for M = 1, 2, and 3 servers.The data provided by a company for the year 2020 – 2021 to carry out Break Even Analysis and provide them the results, complete analysis and suggestions. The data is as follows:Building rent 20000 R.O Every month instalments 30000 R.OThe estimated sales are 750000.0 R.OMaterial Cost / unit 15.0 R.OProduction cost / unit 8.0 R. OTransportation & other Costs / unit (Approx) 4.00 R. O Maintenance cost / unit 1.5 R. O Salary of the employees / unit 0.8 R.OMarketing and advertisement cost / unit 0.7 R. OEach unit is sold at price 35.0 R. O Construct the B.E.P chart on a graph sheet and indicate, B.E.P, M.o.S and also indicate the new B.E.P & M.o.S after the improvement measures has been taken (With different colours). Show the calculations for the following parameters separately before and after the measures taken.1. Determine the B.E.P2. Determine the profit 3. Margin of safety.Also write your decisions taken to improve the profits of the company and to reduce the B.E.P.
- An electrical contractor’s records during the last five weeks indicate the number of job requests: Week 1 2 3 4 5 Jobs 20 22 18 21 22 Predict the number of requests for week 6 using each of this method:c. Exponential smoothing with α = .30; use 20 for week 2 forecastThe network diagram for a project is shown in the accompanying figure, with three timeestimates for each activity. Activity times are in weeks. Do the following:a. Compute the expected time for each activity and the expected duration for each path.b. Identify the critical path.c. Compute the variance of each activity and the variance and standard deviation of eachpath.The answers from 1 to 6 are:1.42242 56% 44% 136kPa 107kPa Please solve for questions 7 8 9 Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful! Please do not rely too much on chatgpt, because its answer may be wrong. Please consider it carefully and give your own answer. You can borrow ideas from gpt, but please do not believe its answer.Very very grateful!
- Make the statistical analysis for all of data given into table below using Excel program. N number =9 COUNT X 1 0.244(N) 2 0.234(N) 3 0.247(N) 4 0.231(N) 5 0.235(N) 6 0.244(N) 7 0.230(N) 8 0.233(N) 9 0.244(N) 10 0.241(N) 11 0.247(N) 12 0.231(N)A service facility consists of one server who can servean average of 2 customers per hour (service times areexponential). An average of 3 customers per hour arrive atthe facility (interarrival times are assumed exponential).The system capacity is 3 customers.a On the average, how many potential customers enterthe system each hour?b What is the probability that the server will be busy?The drag on an airplane wing in flight is known to be a function of the density of air (), the viscosity of air(), the free-stream velocity (U), a characteristic dimension of the wing (s), and the shear stress on the surface of the wing (s). Show that the dimensionless drag, sU2, can be expressed as a function of the Reynolds number, Us.